Blue Series Pushbutton Switches

TE ALCOSWITCH's Blue series switches are well suited for designs requiring human interface via pushbutton style switches

Image of TE Connectivity's Blue Series Pushbutton SwitchesTE ALCOSWITCH's Blue series pushbutton is based on an innovative snap-action mechanism that produces an extremely fast switching moment. This high level of dynamics not only reduces arcing and bounce but it also results in a high number of duty cycles. The series comprises versions with SPDT and DPDT configurations and can be ordered with push on / push off or momentary function. The actuator cap of the push-button switch is available in many colors and sizes.

This miniature pushbutton is easily integrated into compact control/front panels. Despite its small case dimensions, the actuator gives a clear reliable feedback that confirms proper operation. At 265°C the solder heat resistance of the ALCOSWITCH Blue series pushbuttons is high enough for efficient, RoHS compliant wave soldering technology.

  • Miniaturized snap acting pushbutton
  • Contacts with silver inlay (high power) or gold inlay (low current, SPDT)
  • SPDT and DPDT
  • 50,000 cycles for gold plating
  • 25,000 cycles for silver plating
  • Tactile and audible feedback
  • Wire lug or PC board terminals
  • Contact rating up to:
    • 1.5 A @ 250 VAC (EMEA)
    • 3 A @ 125 VAC (North America)
  • Hardware included
  • Boot Seals available
  • Multiple actuator buttons available in both color and size


  • Industrial equipment
  • Medical equipment
  • Instrumentation
  • Communication equipment
  • Control equipment

Blue Series Pushbutton Switches

ImageManufacturer Part NumberDescriptionCircuitAvailable Quantity
1977740-2 datasheet linkSWITCH PUSH SPDT 3A 125V1977740-2SWITCH PUSH SPDT 3A 125VSPDT91 - Immediate
1977740-2 product page link
MPS-203R datasheet linkSWITCH PUSH DPDT 3A 125VMPS-203RSWITCH PUSH DPDT 3A 125VDPDT95 - Immediate
MPS-203R product page link
MPS-203N datasheet linkSWITCH PUSH DPDT 3A 125VMPS-203NSWITCH PUSH DPDT 3A 125VDPDT65 - Immediate
MPS-203N product page link
1977740-1 datasheet linkSWITCH PUSH SPDT 3A 125V1977740-1SWITCH PUSH SPDT 3A 125VSPDT27 - Immediate
1977740-1 product page link
1977740-3 datasheet linkSWITCH PUSH DPDT 3A 125V1977740-3SWITCH PUSH DPDT 3A 125VDPDT82 - Immediate
1977740-3 product page link
View More
Published: 2012-06-29